I would suggest buying a decent sound card. Those run cheap, as you can get a decent one for $30. Beyond that, the HD559 or 579 are decent and cheap. They lack in bass, so the DT990 is an option if you want more immersion. The tradeoff is, to me, losing some positional accuracy for more bass. I personally love the 990 for XBox. The HD555 served me well for gaming until I snagged the HD700.